Vermiculite is a layer-structured metamorphic rock of gibbsite silicate. Rich in magnesium, it comes from hot-liquid-eroded or weathered phlogopite. When it is heated to lose water and expands, lt turns curvingas a leech. Therefore is called vermiculite.lt can be divide into original vermiculite and expanded vermiculite. color it can also be divided into golden vermiculite and white vermiculite.

physical and chemical quota of vermiculite

Being differently hydrated and oxidation, the same vermiculite may have different chemical compositions .Generally, its chemical compositions are as follows:

Chemical quota: Mg x (H2O)(Mg3-x)(ALSiO3O10)(OH2)

Physical properties of Vermiculite

1.reletive humidity 100% 24H 2. Frozen and melte for 15 minustes in 20 under zero, it’s aize won’t chenge

Norms of raw vermiculite (Implementation standards JC/T810-1996)

Main Use and Functions:

1)Fire retardant blocking package

2)TWC of car

3)Freshly baked coated steel plant covering iron,steel,heat,oxidation,improving working environment

4)Building Materials,lightweight building materials

On the roof with cement or asphalt or mineral fibers according to the proportion stirred for roof insulation,moisture-proof,but the house cool,also greatly reduce the pressure on the doors of the roof.

5)Widely used in the heat preservation of the wall

6)In particular,high-rise buildings in steel,construction steel coated with a layer to this fire-resistant coating on steel ,when a fire occurs,extend,reduce damage to the steel structure of the building to the room personnel transfer valuable time.

7)Refractory products

Common mixing vermiculite can be pressed into brick kiln can also be used to steel mills,boilers,vermiculite fire board for walls,security doors,fire on the ship,fire retardant paint,paint the tumel fire.

8)Agriculture

A,Improve soil,often with peat,perlite as organic fertilizer,retain moisture,keep the soil permeability,improve fertilizer for release action.

B,Hatching ,breeding ,cutting,often the role of the field of pesticides,insecticides carrier,and the golf course turf.

9)Feeding

Because vermiculite soft,non-toxic,sterile,good liquidity,strong adsorption,commonly used in many nutrients carriers,formulations,such as concentration of fat,vitamins,honey,preservatives,antioxidants and the like have a large number of applications.

10)Friction & Sealing Material

Because vermiculite resistant high temperature and is a multi-layer sheet structure,high temperatures generated during use in friction,sealing material ,can make more than a single binder fibers,liquefaction,gasification,affecting the brake performance,adding vermiculite after the stone to prevent high-temperature,heat recession,improve product strength,reduce noise,reduce the weight and cost of the product.

11)In package materials

Because vermiculite lightweight,fireproof ,strong adsorption is now widely used in hazardous chemical liquids,chemicals flowing liquid,seafood,water silkworm,fruits,bulbs,plant moss base block storage packaging ,swimming pool,from soft,abrasion resistance,thermal insulation against the cold effect .

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